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The Business Lighting Experts

Keystone Program Start Electronic Ballast, 120-277V For (2) 42W CFL Lamps

SKU: KTEB-242-UV-PS-DW | Ordering Code: KTEB-242-UV-PS-DW

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Product Highlights

  • Ignites up to two 4-pin lamps

Keystone Program Start Electronic Ballast, 120-277V For (2) 42W CFL Lamps


Ignites the following lamp combinations:

  • 1 or 2  32W GX24q CFL 
  • 1 or 2 36W GX24q CFl
  • 1 or 2 42W GX24q CFL
  • 1 or 2 39W or 40W 2G11
  • (2) FC9T5 22W 
  • (1) 57W GX24q CFL 
  • (2) 24W 2G11
  • (1) FC9T5 and (1) FC12T5 combined
  • (1) 28W Circline GR10q 
  • Maximum Case Temperature: 194ºF, 90ºC
  • Lamp End-of-Life Protected

Product Documents

Full Specs



Input Volts


Input Watts


Number of Lamps

Ballast Factor
The percentage of a lamp's rated lumen output that can be expected when operated on a specific commercially available ballast. For example, a ballast with a ballast factor of 0.93 will result in the lamps emitting 93% of their rated lumen output. A ballast with a lower ballast factor results in less light output and also generally consumes less power.
Length (in)
Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Width (in)
For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Height (in)
For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.


5 year limited
Ballast Lamp Type
The type of bulb the ballast can fire.
Start Type
For Ballasts, indicates the method the ballast uses to start its bulbs. HID ballasts can be Probe or Pulse start. Fluorescent ballasts can be Rapid, Instant or Programmed start. For HID and Fluorescent bulbs, indicates the start-type of ballast that the bulb will work with.